%0 Journal Article %A Rochon, Frédéric %T Rigidity of Hamiltonian Actions %J Canadian mathematical bulletin %D 2003 %P 277-290 %V 46 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2003-028-7/ %R 10.4153/CMB-2003-028-7 %F 10_4153_CMB_2003_028_7